Wheel spoke



FIG. 1 is a perspective view of a wheel spoke showing my new design;

FIG. 2 is a front view thereof; and,

FIG. 3 is a close-up, front elevation view taken along box 3 in FIG. 2.

In the drawings, broken lines shown in the drawings depict environmental subject matter only and form no part of the claimed design. The dash-dot-dash broken lines define the bounds of the claimed design and form no part thereof. 

CLAIM The ornamental design for a wheel spoke, as shown and described. 